Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 9-12

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 12-15

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 16-21

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 22-32

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 43-56

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 56-63

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 63-70

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 70-74

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 74-77

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 78-79

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 80-84

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 84-86

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 87-88

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 90-93

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 93-96

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 96-99

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 99-101

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 101-104

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 104-111

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 111-115

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 115-124

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 126-133

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 138-148

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 148-149

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 149-152

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 152

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 153-156

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 156-161

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 161-163

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 163-170

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 170-173

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, pages 173-179

Published in Bulletin of The British Ornithologists' Club, in 1986, in volume 106, issue 1, pages 32-40

Published in Bulletin of the British Ornithologists' Club, in 1986, in volume 106, issue 3, pages 124-126